It really would be a good idea to display the card back as well as the Background and to be able to cycle through the face side of the card.

OK - with some decks there is no back, or the creator has not gone to much trouble with the back? All the same with other Decks it is an important part of the Deck and really should be displayed in the P2P Deck Share. Without it you cannot really tell what the Deck is like.